Re: colorvision photocal strange tints/ bright screen?
Re: colorvision photocal strange tints/ bright screen?
- Subject: Re: colorvision photocal strange tints/ bright screen?
- From: email@hidden
- Date: Sun, 17 Nov 2002 12:10:37 EST
In a message dated 11/17/02 6:39:45 AM, email@hidden writes:
>
I have just invested in photocal/Syder 2.7 to calibrate a 17inch LCD apple
>
display.
>
I own this monitor, and find it to profile very nicely with the Spyder.
>
I am not having the success with this I had hoped for. My
>
questions /problems are as follows;
>
>
1 What are the factory default settings and how do I reset the monitor?
>
There are none with this monitor, simply set the brightness to a level that
suits your needs before beginning the calibration and profiling process.
>
It
>
certainly can not be done during the calibration process as requested as
>
there are no frontal controls.
>
Right, much like laptop screens, there are no front panel controls, so there
is nothing you need to reset.
>
>
2. My first attempts resulting in marked cyan/purple casts in shadow areas
>
on screen (not in print-outs) in de-saturated prints - I work mostly in b&
>
w.
>
The way PhotoCAL 2.7 works should never do this, due to its special
interaction with the Apple LCDs. Sounds like Adobe Gamma or some other screen
adjusting software is interfering here.
>
>
3. After dumping display/monitor/colorsync preferences and starting with
>
apple display as the highlighted starting point I managed finally to get an
>
even desaturated screen - slightly cyan throughout, but even. However it
>
seems too bright as print-outs are much darker and i have had custom
>
profiles made for my papers.
>
You need to set the monitor white brightness to match your print white under
your proofing light before you start, or you will be comparing apples to
oranges. You also need to be sure you are using the gamma that your
application expects, or viewing images in an application that makes gamma
corrections, such as Photoshop.
>
>
4. I was not sure which option to check; a. LCD monitor with prests or; b.
>
LCD monitor with no colour controls. I tried both and thought perhaps the
>
latter.
>
Yes, you already noted you had no front panel controls, this simply chooses
the route related to that.
>
>
5. Finally I checked the gamma 2.2 option and screen temperature 6500
>
option as this seems to match out of house labs/ offices etc better. Is
>
this the right thing to do?
>
Yes, for color savvy applications, for those older apps that assume a Mac
gamma of 1.8, it may effect your image brightness.
>
And was it overridden by the calibration
>
process anyway?
>
No, it is incorporated into the profile.
>
>
Please can someone give me some pointers. I calibrated with the room as
>
dark as possible as instructed with no light on the screen. It seems more
>
sensible however to calibrate in a more realistic working light.
>
>
It works fine either way, as long as there is no sharp light raking the
screen at a steep angle. Calibrating with the lights on defines a more
reasonable black to dark gray ratio than doing it in the dark.
C. David Tobie
Design Cooperative
email@hidden
_______________________________________________
colorsync-users mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/colorsync-users
Do not post admin requests to the list. They will be ignored.